Issues‎ > ‎Vol.7 No.1‎ > ‎


Labor Productivity of Gypsum Plastering in Sulaimani City’s Projects

Payjor Ali Shonm1,     Noori Sadeq Ali2,    Atta Shekh Karim Abdullah3

1University of Sulaimani, College of Engineering, Civil Engineering Department, 2University of Cihan / Erbil, Civil Engineering Department3Sulaimani Polytechnic University, College of Engineering 

Received 29 July 2019,     Accepted 28 August 2019,      Published 1 April 2020


In this study the labor productivity (LP) and the effects of main factors on LP in building projects in Sulaimani City practically on field sites were investigated for gypsum plastering (GP) works. Accordingly, the most important effective factors on LP were, height(h), number of skilled laborers (SkL) and Crew size (Cz).  30 practical data on field sites were practically observed.

The results showed that the minimum and maximum LP were between 10.53 and 23.73 m2/hr. The average LP was 15.2 m2/hr., while h=0-3 m, SkL=1-2 laborers and Cz=2-4 laborers. The study investigated that the h, SkL and Cz had a direct effect on LP, while it is found that the age and experience of laborers had a slight effect on LP. A model with a significant relation R2 97.5% with the factors was found to predict the LP for gypsum plastering.


Gypsum plastering, Interior finishing works, Labor productivity, Laborer productivity measurement, Years of experience. 

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